... speaker 1.speaker power:2*50W 2.amplifier,5"speaker 3.MP3,CD,PC input 4.echo active speaker 2.0 Multimedia Active Speaker,Stereo Speaker ... Feature:1.speaker power:2*60W2.multimedia room,OEM ... .Strict QC,CE,CCC,ISO9001:2000 certifiedstrong point:This education system is special designed for school. When you setup for tens ...